Add HornetQ JMS support

Provide auto-configuration support for HornetQ JMS broker, along with
an additional starter POM.

The connection factory connects to a broker available on the local
machine by default. A configuration switch allows to enable an embedded
mode that starts HornetQ as part of the application.

In such a mode, the spring.hornetq.embedded.* properties provide
additional options to configure the embedded broker. In particular,
message persistence and data directory locations can be specified. It is
also possible to define the queue(s) and topic(s) to create on startup.

Fixes: gh-765

spring-boot-samples/spring-boot-sample-hornetq/src/main/java/sample/hornetq/SampleHornetQApplication.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hornetq;
+
+import javax.jms.ConnectionFactory;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageListener;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jms.listener.DefaultMessageListenerContainer;
+import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;
+
+@Configuration
+@EnableAutoConfiguration
+@ComponentScan
+public class SampleHornetQApplication {
+
+	@Autowired
+	private ConnectionFactory connectionFactory;
+
+	@Bean
+	public ScheduledAnnotationBeanPostProcessor scheduledAnnotationBeanPostProcessor() {
+		return new ScheduledAnnotationBeanPostProcessor();
+	}
+
+	@Bean
+	public DefaultMessageListenerContainer messageListener() {
+		DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
+		container.setConnectionFactory(this.connectionFactory);
+		container.setDestinationName("testQueue");
+		container.setMessageListener(new MessageListener() {
+			@Override
+			public void onMessage(Message message) {
+				try {
+					System.out.println(message.getBody(Object.class));
+				}
+				catch (JMSException ex) {
+					ex.printStackTrace();
+				}
+			}
+		});
+		return container;
+	}
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleHornetQApplication.class, args);
+	}
+}

spring-boot-samples/spring-boot-sample-hornetq/src/main/java/sample/hornetq/Sender.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hornetq;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jms.core.JmsTemplate;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Sender {
+
+	@Autowired
+	private JmsTemplate jmsTemplate;
+
+	@Scheduled(fixedDelay = 1000L)
+	public void send() {
+		this.jmsTemplate.convertAndSend("testQueue", "Hello");
+	}
+
+}